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Finding the Fourth Proportional to 19,303.99, 26,630.01 and 12,142.60

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Solution

The fourth proportional to 19,303.99, 26,630.01 and 12,142.60 is: 16,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,303.99 : 26,630.01 = 12,142.60 : x
  2. Step 2: Convert to fraction form
    19,303.99/26,630.01 = 12,142.60/x
  3. Step 3: Cross multiply
    19,303.99x = 26,630.01 × 12,142.60
  4. Step 4: Simplify right side
    19,303.99x = 323,357,492.85
  5. Step 5: Solve for x
    x = 323,357,492.85/19,303.99
  6. Step 6: Final answer
    x = 16,750.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.